Christmas Bird Counts - 2026 - 2027 The Christmas Bird Count, organized by the National Audubon Society, occurs December 14 to January 5 and is the nation's longest running citizen science bird project. Find a South Dakota count near you and join in the fun. Read More Regional CBC Counts DateCBCDetails 12/19/2026Sioux Falls CBC Sioux Falls Christmas Bird Count Chris Anderson 1/2/2027Canton CBC Canton Christmas Bird Count Chris Anderson